Life Extension
Solutions
- InVista™ Subsea inspection supports riser life extension
- Regulatory compliant integrity data compliments life cycle extensions and remaining life assessments of deepwater risers and pipelines
- 100% circumferential and axial UT inspection coverage
- Actual wall thickness information
- Compare with baseline or prior inspection results, if available
- Measure internal and external corrosion (wall loss)
- Detect geometric deformations such as dents
- Identify internal coating deterioration
- Establish inspection monitoring locations
Value
- Enabling competitive subsea production through the lifecycle extension of existing deepwater risers and pipelines
- Riser life extension triggers an assessment in API 2RIM
- Review the validity of existing design basis
- Establish if new riser analysis required
- Full assessment approach can be used to re-establish the baseline for future fitness-for-service
- Corrosion is the #1 integrity threat to risers and pipelines
- Consider corrosion a precursor to fatigue cracking – any wall loss identified during an inspection should be included in the assessment
- If corrosion defects are detected in a deepwater riser, an assessment may include the following:
- Remaining strength, Buckling, Collapse, Remaining life based on corrosion grow if corrosion still active, Fatigue, Fracture mechanics (ECA)
- Parametric studies consider variation in input parameters
- Local FEA (level 3 assessment)
- Review the validity of existing design basis
